Increased Landslide Risk due to Excessive Rainfall and Snowmelt (1/6/2022)

The National Weather Service (NWS) has predicted an excessive rainfall event Thursday through Friday with rain totals topping between 1.5--3 inches.

Heavy rain combined with recent snowmelt increases the threat of landslides.

To report a non-life-threatening landslide, call our regional, non-emergency dispatch center (425) 577-5656, open 24 hours a day, 7 days a week. In the case of an emergency always call 9-1-1.


Intense rainfall, runoff, or rapid snowmelt can change the earth into a flowing river of mud. The earth can move rapidly, sometimes with little or no warning. Mercer Island sees about 5-15 slides each year.

Recognize the warning signs of a landslide:

  • Tilting trees on slopes
  • Cracks in soil, driveways, and sidewalks
  • Sunken or broken road beds
  • Sagging or taut utility lines
  • Leaking or broken water pipes

Follow this link for additional information about landslides.

Take time today to make sure your family's emergency plans and kits are up-to-date.

Share on Facebook Share on Twitter Share on Linkedin Email this link
<span class="translation_missing" title="translation missing:">Load Comment Text</span>